Next‐Generation Supercapacitors: Advances in Binder‐Free Electrodes, Scalable Fabrication, and Emerging Applications

Abstract Supercapacitors represent a transformative energy storage technology, bridging the gap between conventional capacitors and batteries through their exceptional power density, rapid charge/discharge capabilities, and extended cycle life. This comprehensive review examines recent breakthroughs in next‐generation supercapacitor technology, with particular emphasis on binder‐free electrode architectures and advanced fabrication methodologies. Cutting‐edge manufacturing techniques are systematically analyzed, including chemical vapor deposition, electrospinning, sol–gel processing, and additive manufacturing, highlighting their role in overcoming traditional limitations imposed by polymeric binders. The discussion encompasses novel material systems, such as graphene‐based architectures, transition metal compounds, and conductive polymer networks, which collectively enable enhanced specific capacitance (>500 F g −1 in optimized systems) and improved energy density while maintaining superior power characteristics. A critical evaluation of scalable production methods addresses the transition from laboratory innovations to industrial implementation, with specific attention to cost‐effectiveness and process sustainability. The review further explores emerging applications across diverse sectors, including: 1) renewable energy integration and grid stabilization, 2) electric vehicle power systems, and 3) flexible/wearable electronics. Through a comprehensive assessment of existing challenges and future directions, this review provides a constructive reference for researchers in materials science, electrochemistry, and energy engineering.